Level



' e. B. CONN.

LEVEL.

, APPLICATION FILED FEB. 25. H9.

Patented Aug. 19, 1919.

2 SHEETS-SHEET I.

G. B. CONN.

LEVEL.

APPLICATION FILED FEB. 25. 1919.

Patented Aug. 19, 1919.

2 SHEETS-SHELF 2 cnonen B. com, or 0mm, NEBRASKA.

LEVEL.

Specification of Letters Patent.

Patented Aug. 19, 1919.

Application filed February 25, 1919. Serial No. 279,068.

To all whom it may concern:

Be it known that I, GEORGE B. CONN, a citizen of the United States, residin at Omaha, in the county of Douglas and tate of Nebraska, have invented certain new and useful Improvements in Levels, of which the following is a specification.

My invention relates to improvements in levels and refers particularly to the type known as plumb levels, the main object being the provision of a level which can be used to determine the desired position with a greater degree of accuracy or fineness than in levels heretofore produced.

Another object of my invention is the provision of a level which will bevery light" in weight, which will perform its functlon in an efiicient and practical manner, and which will be capable of production at suit able price.

To attain these objects, my invention consists of a level of thecharacter and for the purpose stated, embodying novel features of construction and combination of parts substantially as disclosed herein.

Figure 1 represents a side elevation of a level constructed in accordance with my invention.

Fig. 2 represents a similar view, the stock being used to determine the degree of a certain incline.

Fig. 3 represents a sectional view taken on the line 33 of Fig. 1.

Fig. 4 represents a sectional view taken on the line H of Fig. 3.

Fig. 5 represents a detail view of one of the clamping collars and members which retain the ball bearings in position, and

Fig. 6 represents a view of one of the said members which are disposed in pairs to secure the ball bearings.

. Referring by numerals to the drawings, in which similar numbers of reference denote the same parts in all theviews:

The numeral 1 designates the frame or stock of my level, which is made preferably of aluminum and of open construction to in sure lightness of weight, the stock being provided with the central opening 2, formed with the pair of shoulders 3, in which rests the sight glasses retained in place by the threaded ringsv 5, engaging the threads 6, formed around said opening, a further smaller shoulder 7 being provided to receivethe pair of dial plates 8,-provided each with a similar dial indication 9.

From this construction, it will be observed that the stock is of open construction with an opening or chamber in its center, in which is secured the sight glasses, and the pair of dials, said dials being formed with an opening 10, in which is journaled the dial shaft 11, carrying on each of its extended ends 11, the pointers or hands 12, which indicate the degree upon said dials.

Centrally secured upon the dial shaft by means of the binding screw 13, is the weight 14:, and said dial shaft is further provided near each end with a channel or groove 15, in which is seated the ball bearings 16, said channel forming the lower portion of the track for said balls, while the pairs of rings 17, form the upper ortion 18, of the track for the balls 16, sai rings being secured in proper relation by the two split collars 19, having their split portion 20, formed with ears 21, engaged by clamping screws 22, for binding the collars upon the pairs or sets of rings for retaining the rings 1n proper position, the collars being formed each with a series of lugs 23, torec'eive screws 21 to fasten the collars upon the dials.

From this construction, it will be observed ,that the dials are mounted in. the stock, and secured therein by a series of small screws 24, and to insure the dials remaining in the proper position and to take up any wear which may be occasioned by constant use of the level, the dial plates upon their edge are formed with lugs 25, which are disposed in depressions 3 of the shoulders 3, each lug 25 being engaged by the ends bearing for the balls, which construction renders the level very sensitive and insures the determination of any level or incline with the greatest degree of accuracy, and instantly indicates the level or incline. I

It will be apparent that I provide'a level which, all things considered, can be pro v duced at a fair price, which is light in weight, which will operate instantly in the performance of its functions, and which in every respect will prove efiicient and practical.

I claim:

A level consisting of the stock having a central opening, a pair of sight openings and dials mounted in said opening, a dial shaft mounted in said dials, said shaft being formed with a groove near each end, hands or indicators secured on the extended ends of said dial shaft, a weight mounted on and suspended from the dial shaft, two pairs of rings having a ball track disposed over the 15 two pairs of rings to retain them in proper 2 position.

In testimony whereof I aifix my signature;

one. B. CONN. 

